Effects of Inhomogeneities on Heat and Mass Transport Phenomena in Thermal Bridges
AbstractThe interest of calculating the effects of thermal bridges in buildings energy consumption is growing, due to recent energy saving regulations applied in different countries. The widespread use of insulating materials to reduce energy requirements of buildings, often employed for intermediate insulation of the building envelope, makes thermal bridges a crucial point in the energy analysis of building envelopes. Furthermore, heat losses through thermal bridges often lead to building pathologies due to moisture condensation. Therefore, thermal bridges need to be correctly characterized in the building design stage in order to reduce heat losses and avoid materials degradation. The authors numerically simulate, by using finite elements, the steady-state and dynamic three-dimensional (3D) heat and vapor transport in inhomogeneous thermal bridges and building envelopes. The aim of the present work is to show the importance of taking into account the presence of inhomogeneities (i.e., metal stud) in building materials for the calculation of actual heat losses and water condensation in 3D thermal bridges. The obtained heat transfer results are verified against the reference data of the technical standard UNI EN ISO 10211. The proposed microscopic approach is essential to calculate the actual heat losses of three-dimensional thermal bridges and building envelopes and to overcome condensation problems. View Full-Text
Share & Cite This Article
Iodice, P.; Massarotti, N.; Mauro, A. Effects of Inhomogeneities on Heat and Mass Transport Phenomena in Thermal Bridges. Energies 2016, 9, 126.
Iodice P, Massarotti N, Mauro A. Effects of Inhomogeneities on Heat and Mass Transport Phenomena in Thermal Bridges. Energies. 2016; 9(3):126.Chicago/Turabian Style
Iodice, Paola; Massarotti, Nicola; Mauro, Alessandro. 2016. "Effects of Inhomogeneities on Heat and Mass Transport Phenomena in Thermal Bridges." Energies 9, no. 3: 126.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.